Taxonomy is a way of organizing living things into groups. It is like having a big family tree. We group animals, plants, and other living things into different families. For example, we can group all cats together and all dogs together. We can also group all cats together, but then split them up into different types, like lions, tigers, and cheetahs. We do this for all living things, including plants and fungi. Taxonomy helps us understand how living things are related to each other, and it helps us figure out what kind of living thing we're dealing with.